「今日は何曜日ですか。」きょう・は・なん・よう・び・で・す・か。 [kyoh-wa-nan-yoh-bee-desska?] What is the day of the week today? Which day of the week is it? 曜日 よう・び [yohh-bee] is the term for weekday-with-a-name. If you are asking which date it is you can ask 「今日は何日ですか。」 きょう・は・なん・にち・です・か。 [kyoh-wa-nan-nichi-desska] "What/which date is it today?"